/////////////////////////////////////////////////////////////////////////////// // Name: wx/strvararg.h // Purpose: macros for implementing type-safe vararg passing of strings // Author: Vaclav Slavik // Created: 2007-02-19 // RCS-ID: $Id$ // Copyright: (c) 2007 REA Elektronik GmbH // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef _WX_STRVARARG_H_ #define _WX_STRVARARG_H_ #include "wx/platform.h" #if wxONLY_WATCOM_EARLIER_THAN(1,4) #error "OpenWatcom version >= 1.4 is required to compile this code" #endif #include "wx/cpp.h" #include "wx/chartype.h" #include "wx/strconv.h" #include "wx/buffer.h" #include "wx/unichar.h" class WXDLLIMPEXP_FWD_BASE wxCStrData; class WXDLLIMPEXP_FWD_BASE wxString; // ---------------------------------------------------------------------------- // WX_DEFINE_VARARG_FUNC* macros // ---------------------------------------------------------------------------- // This macro is used to implement type-safe wrappers for variadic functions // that accept strings as arguments. This makes it possible to pass char*, // wchar_t* or even wxString (as opposed to having to use wxString::c_str()) // to e.g. wxPrintf(). // // This is done by defining a set of N template function taking 1..N arguments // (currently, N is set to 30 in this header). These functions are just thin // wrappers around another variadic function ('impl' or 'implUtf8' arguments, // see below) and the only thing the wrapper does is that it normalizes the // arguments passed in so that they are of the type expected by variadic // functions taking string arguments, i.e., char* or wchar_t*, depending on the // build: // * char* in the current locale's charset in ANSI build // * char* with UTF-8 encoding if wxUSE_UNICODE_UTF8 and the app is running // under an UTF-8 locale // * wchar_t* if wxUSE_UNICODE_WCHAR or if wxUSE_UNICODE_UTF8 and the current // locale is not UTF-8 // // Note that wxFormatString *must* be used for the format parameter of these // functions, otherwise the implementation won't work correctly. Furthermore, // it must be passed by value, not reference, because it's modified by the // vararg templates internally. // // Parameters: // [ there are examples in square brackets showing values of the parameters // for the wxFprintf() wrapper for fprintf() function with the following // prototype: // int wxFprintf(FILE *stream, const wxString& format, ...); ] // // rettype Functions' return type [int] // name Name of the function [fprintf] // numfixed The number of leading "fixed" (i.e., not variadic) // arguments of the function (e.g. "stream" and "format" // arguments of fprintf()); their type is _not_ converted // using wxArgNormalizer, unlike the rest of // the function's arguments [2] // fixed List of types of the leading "fixed" arguments, in // parenthesis [(FILE*,const wxString&)] // impl Name of the variadic function that implements 'name' for // the native strings representation (wchar_t* if // wxUSE_UNICODE_WCHAR or wxUSE_UNICODE_UTF8 when running under // non-UTF8 locale, char* in ANSI build) [wxCrt_Fprintf] // implUtf8 Like 'impl', but for the UTF-8 char* version to be used // if wxUSE_UNICODE_UTF8 and running under UTF-8 locale // (ignored otherwise) [fprintf] // #define WX_DEFINE_VARARG_FUNC(rettype, name, numfixed, fixed, impl, implUtf8) \ _WX_VARARG_DEFINE_FUNC_N0(rettype, name, impl, implUtf8, numfixed, fixed) \ WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, numfixed, fixed, impl, implUtf8) // ditto, but without the version with 0 template/vararg arguments #define WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, \ numfixed, fixed, impl, implUtf8) \ _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \ _WX_VARARG_DEFINE_FUNC, \ rettype, name, impl, implUtf8, numfixed, fixed) // Like WX_DEFINE_VARARG_FUNC, but for variadic functions that don't return // a value. #define WX_DEFINE_VARARG_FUNC_VOID(name, numfixed, fixed, impl, implUtf8) \ _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \ _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \ _WX_VARARG_DEFINE_FUNC_VOID, \ void, name, impl, implUtf8, numfixed, fixed) // Like WX_DEFINE_VARARG_FUNC_VOID, but instead of wrapping an implementation // function, does nothing in defined functions' bodies. // // Used to implement wxLogXXX functions if wxUSE_LOG=0. #define WX_DEFINE_VARARG_FUNC_NOP(name, numfixed, fixed) \ _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \ _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \ _WX_VARARG_DEFINE_FUNC_NOP, \ void, name, dummy, dummy, numfixed, fixed) // Like WX_DEFINE_VARARG_FUNC_CTOR, but for defining template constructors #define WX_DEFINE_VARARG_FUNC_CTOR(name, numfixed, fixed, impl, implUtf8) \ _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \ _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \ _WX_VARARG_DEFINE_FUNC_CTOR, \ void, name, impl, implUtf8, numfixed, fixed) // ---------------------------------------------------------------------------- // wxFormatString // ---------------------------------------------------------------------------- // This class must be used for format string argument of the functions // defined using WX_DEFINE_VARARG_FUNC_* macros. It converts the string to // char* or wchar_t* for passing to implementation function efficiently (i.e. // without keeping the converted string in memory for longer than necessary, // like c_str()). It also converts format string to the correct form that // accounts for string changes done by wxArgNormalizer<> // // Note that this class can _only_ be used for function arguments! class WXDLLIMPEXP_BASE wxFormatString { public: wxFormatString(const char *str) : m_char(wxCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {} wxFormatString(const wchar_t *str) : m_wchar(wxWCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {} wxFormatString(const wxString& str) : m_str(&str), m_cstr(NULL) {} wxFormatString(const wxCStrData& str) : m_str(NULL), m_cstr(&str) {} wxFormatString(const wxCharBuffer& str) : m_char(str), m_str(NULL), m_cstr(NULL) {} wxFormatString(const wxWCharBuffer& str) : m_wchar(str), m_str(NULL), m_cstr(NULL) {} enum ArgumentType { Arg_Char, // character as char Arg_Other // something else, for example int for %d }; // returns the type of format specifier for n-th variadic argument (this is // not necessarily n-th format specifier if positional specifiers are used); // called by wxArgNormalizer<> specializations to get information about // n-th variadic argument desired representation ArgumentType GetArgumentType(unsigned n) const; // returns the value passed to ctor, only converted to wxString, similarly // to other InputAsXXX() methods wxString InputAsString() const; #if !wxUSE_UNICODE_WCHAR operator const char*() const { return const_cast(this)->AsChar(); } private: // InputAsChar() returns the value passed to ctor, only converted // to char, while AsChar() takes the the string returned by InputAsChar() // and does format string conversion on it as well (and similarly for // ..AsWChar() below) const char* InputAsChar(); const char* AsChar(); wxCharBuffer m_convertedChar; #endif // !wxUSE_UNICODE_WCHAR #if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY public: operator const wchar_t*() const { return const_cast(this)->AsWChar(); } private: const wchar_t* InputAsWChar(); const wchar_t* AsWChar(); wxWCharBuffer m_convertedWChar; #endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY private: wxCharBuffer m_char; wxWCharBuffer m_wchar; // NB: we can use a pointer here, because wxFormatString is only used // as function argument, so it has shorter life than the string // passed to the ctor const wxString * const m_str; const wxCStrData * const m_cstr; wxDECLARE_NO_ASSIGN_CLASS(wxFormatString); }; // these two helper classes are used to find wxFormatString argument among fixed // arguments passed to a vararg template struct wxFormatStringArgument { wxFormatStringArgument(const wxFormatString *s = NULL) : m_str(s) {} const wxFormatString *m_str; // overriding this operator allows us to reuse _WX_VARARG_JOIN macro wxFormatStringArgument operator,(const wxFormatStringArgument& a) const { wxASSERT_MSG( m_str == NULL || a.m_str == NULL, "can't have two format strings in vararg function" ); return wxFormatStringArgument(m_str ? m_str : a.m_str); } operator const wxFormatString*() const { return m_str; } }; template struct wxFormatStringArgumentFinder { static wxFormatStringArgument find(T) { // by default, arguments are not format strings, so return "not found" return wxFormatStringArgument(); } }; template<> struct wxFormatStringArgumentFinder { static wxFormatStringArgument find(const wxFormatString& arg) { return wxFormatStringArgument(&arg); } }; template<> struct wxFormatStringArgumentFinder : public wxFormatStringArgumentFinder {}; // avoid passing big objects by value to wxFormatStringArgumentFinder::find() // (and especially wx[W]CharBuffer with its auto_ptr<> style semantics!): template<> struct wxFormatStringArgumentFinder : public wxFormatStringArgumentFinder {}; template<> struct wxFormatStringArgumentFinder : public wxFormatStringArgumentFinder {}; template<> struct wxFormatStringArgumentFinder : public wxFormatStringArgumentFinder {}; // ---------------------------------------------------------------------------- // wxArgNormalizer* converters // ---------------------------------------------------------------------------- // Converts an argument passed to wxPrint etc. into standard form expected, // by wxXXX functions, e.g. all strings (wxString, char*, wchar_t*) are // converted into wchar_t* or char* depending on the build. template struct wxArgNormalizer { // Ctor. 'value' is the value passed as variadic argument, 'fmt' is pointer // to printf-like format string or NULL if the variadic function doesn't // use format string and 'index' is index of 'value' in variadic arguments // list (starting at 1) wxArgNormalizer(T value, const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index)) : m_value(value) {} // Returns the value in a form that can be safely passed to real vararg // functions. In case of strings, this is char* in ANSI build and wchar_t* // in Unicode build. T get() const { return m_value; } T m_value; }; // normalizer for passing arguments to functions working with wchar_t* (and // until ANSI build is removed, char* in ANSI build as well - FIXME-UTF8) // string representation #if !wxUSE_UTF8_LOCALE_ONLY template struct wxArgNormalizerWchar : public wxArgNormalizer { wxArgNormalizerWchar(T value, const wxFormatString *fmt, unsigned index) : wxArgNormalizer(value, fmt, index) {} }; #endif // !wxUSE_UTF8_LOCALE_ONLY // normalizer for passing arguments to functions working with UTF-8 encoded // char* strings #if wxUSE_UNICODE_UTF8 template struct wxArgNormalizerUtf8 : public wxArgNormalizer { wxArgNormalizerUtf8(T value, const wxFormatString *fmt, unsigned index) : wxArgNormalizer(value, fmt, index) {} }; #define wxArgNormalizerNative wxArgNormalizerUtf8 #else // wxUSE_UNICODE_WCHAR #define wxArgNormalizerNative wxArgNormalizerWchar #endif // wxUSE_UNICODE_UTF8 // wxUSE_UNICODE_UTF8 // special cases for converting strings: // base class for wxArgNormalizer specializations that need to do conversion; // CharType is either wxStringCharType or wchar_t in UTF-8 build when wrapping // widechar CRT function template struct wxArgNormalizerWithBuffer { typedef wxCharTypeBuffer CharBuffer; wxArgNormalizerWithBuffer() {} wxArgNormalizerWithBuffer(const CharBuffer& buf, const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index)) : m_value(buf) {} const CharType *get() const { return m_value; } CharBuffer m_value; }; // string objects: template<> struct WXDLLIMPEXP_BASE wxArgNormalizerNative { wxArgNormalizerNative(const wxString& s, const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index)) : m_value(s) {} const wxStringCharType *get() const; const wxString& m_value; }; // c_str() values: template<> struct WXDLLIMPEXP_BASE wxArgNormalizerNative { wxArgNormalizerNative(const wxCStrData& value, const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index)) : m_value(value) {} const wxStringCharType *get() const; const wxCStrData& m_value; }; // wxString/wxCStrData conversion to wchar_t* value #if wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY template<> struct WXDLLIMPEXP_BASE wxArgNormalizerWchar : public wxArgNormalizerWithBuffer { wxArgNormalizerWchar(const wxString& s, const wxFormatString *fmt, unsigned index); }; template<> struct WXDLLIMPEXP_BASE wxArgNormalizerWchar : public wxArgNormalizerWithBuffer { wxArgNormalizerWchar(const wxCStrData& s, const wxFormatString *fmt, unsigned index); }; #endif // wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY // C string pointers of the wrong type (wchar_t* for ANSI or UTF8 build, // char* for wchar_t Unicode build or UTF8): #if wxUSE_UNICODE_WCHAR template<> struct wxArgNormalizerWchar : public wxArgNormalizerWithBuffer { wxArgNormalizerWchar(const char* s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerWithBuffer(wxConvLibc.cMB2WC(s), fmt, index) {} }; #elif wxUSE_UNICODE_UTF8 template<> struct wxArgNormalizerUtf8 : public wxArgNormalizerWithBuffer { wxArgNormalizerUtf8(const wchar_t* s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerWithBuffer(wxConvUTF8.cWC2MB(s), fmt, index) {} }; template<> struct wxArgNormalizerUtf8 : public wxArgNormalizerWithBuffer { wxArgNormalizerUtf8(const char* s, const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index)) { if ( wxLocaleIsUtf8 ) { m_value = wxCharBuffer::CreateNonOwned(s); } else { // convert to widechar string first: wxWCharBuffer buf(wxConvLibc.cMB2WC(s)); // then to UTF-8: if ( buf ) m_value = wxConvUTF8.cWC2MB(buf); } } }; // UTF-8 build needs conversion to wchar_t* too: #if !wxUSE_UTF8_LOCALE_ONLY template<> struct wxArgNormalizerWchar : public wxArgNormalizerWithBuffer { wxArgNormalizerWchar(const char* s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerWithBuffer(wxConvLibc.cMB2WC(s), fmt, index) {} }; #endif // !wxUSE_UTF8_LOCALE_ONLY #else // ANSI - FIXME-UTF8 template<> struct wxArgNormalizerWchar : public wxArgNormalizerWithBuffer { wxArgNormalizerWchar(const wchar_t* s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerWithBuffer(wxConvLibc.cWC2MB(s), fmt, index) {} }; #endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8/ANSI // this macro is used to implement specialization that are exactly same as // some other specialization, i.e. to "forward" the implementation (e.g. for // T=wxString and T=const wxString&). Note that the ctor takes BaseT argument, // not T! #if wxUSE_UNICODE_UTF8 #if wxUSE_UTF8_LOCALE_ONLY #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \ _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT) #else // possibly non-UTF8 locales #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \ _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT); \ _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT) #endif #else // wxUSE_UNICODE_WCHAR #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \ _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT) #endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR #define _WX_ARG_NORMALIZER_FORWARD_IMPL(Normalizer, T, BaseT) \ template<> \ struct Normalizer : public Normalizer \ { \ Normalizer(BaseT value, \ const wxFormatString *fmt, unsigned index) \ : Normalizer(value, fmt, index) {} \ } // non-reference versions of specializations for string objects WX_ARG_NORMALIZER_FORWARD(wxString, const wxString&); WX_ARG_NORMALIZER_FORWARD(wxCStrData, const wxCStrData&); // versions for passing non-const pointers: WX_ARG_NORMALIZER_FORWARD(char*, const char*); WX_ARG_NORMALIZER_FORWARD(wchar_t*, const wchar_t*); // versions for passing wx[W]CharBuffer: WX_ARG_NORMALIZER_FORWARD(wxCharBuffer, const char*); WX_ARG_NORMALIZER_FORWARD(const wxCharBuffer&, const char*); WX_ARG_NORMALIZER_FORWARD(wxWCharBuffer, const wchar_t*); WX_ARG_NORMALIZER_FORWARD(const wxWCharBuffer&, const wchar_t*); // versions for std::[w]string: #if wxUSE_STD_STRING #include "wx/stringimpl.h" #if !wxUSE_UTF8_LOCALE_ONLY template<> struct wxArgNormalizerWchar : public wxArgNormalizerWchar { wxArgNormalizerWchar(const std::string& s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerWchar(s.c_str(), fmt, index) {} }; template<> struct wxArgNormalizerWchar : public wxArgNormalizerWchar { wxArgNormalizerWchar(const wxStdWideString& s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerWchar(s.c_str(), fmt, index) {} }; #endif // !wxUSE_UTF8_LOCALE_ONLY #if wxUSE_UNICODE_UTF8 template<> struct wxArgNormalizerUtf8 : public wxArgNormalizerUtf8 { wxArgNormalizerUtf8(const std::string& s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerUtf8(s.c_str(), fmt, index) {} }; template<> struct wxArgNormalizerUtf8 : public wxArgNormalizerUtf8 { wxArgNormalizerUtf8(const wxStdWideString& s, const wxFormatString *fmt, unsigned index) : wxArgNormalizerUtf8(s.c_str(), fmt, index) {} }; #endif // wxUSE_UNICODE_UTF8 WX_ARG_NORMALIZER_FORWARD(std::string, const std::string&); WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&); #endif // wxUSE_STD_STRING // versions for wxUniChar, wxUniCharRef: // (this is same for UTF-8 and Wchar builds, we just convert to wchar_t) template<> struct wxArgNormalizer : public wxArgNormalizer { wxArgNormalizer(const wxUniChar& s, const wxFormatString *fmt, unsigned index) : wxArgNormalizer(s.GetValue(), fmt, index) {} }; // for wchar_t, default handler does the right thing // char has to be treated differently in Unicode builds: a char argument may // be used either for a character value (which should be converted into // wxUniChar) or as an integer value (which should be left as-is). We take // advantage of the fact that both char and wchar_t are converted into int // in variadic arguments here. #if wxUSE_UNICODE template struct wxArgNormalizerNarrowChar { wxArgNormalizerNarrowChar(T value, const wxFormatString *fmt, unsigned index) { // FIXME-UTF8: which one is better default in absence of fmt string // (i.e. when used like e.g. Foo("foo", "bar", 'c', NULL)? if ( !fmt || fmt->GetArgumentType(index) == wxFormatString::Arg_Char ) m_value = wx_truncate_cast(T, wxUniChar(value).GetValue()); else m_value = value; } int get() const { return m_value; } T m_value; }; template<> struct wxArgNormalizer : public wxArgNormalizerNarrowChar { wxArgNormalizer(char value, const wxFormatString *fmt, unsigned index) : wxArgNormalizerNarrowChar(value, fmt, index) {} }; template<> struct wxArgNormalizer : public wxArgNormalizerNarrowChar { wxArgNormalizer(unsigned char value, const wxFormatString *fmt, unsigned index) : wxArgNormalizerNarrowChar(value, fmt, index) {} }; #endif // wxUSE_UNICODE // convert references: WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&); WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&); WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&); WX_ARG_NORMALIZER_FORWARD(const wchar_t&, wchar_t); WX_ARG_NORMALIZER_FORWARD(const char&, char); WX_ARG_NORMALIZER_FORWARD(const unsigned char&, unsigned char); #undef WX_ARG_NORMALIZER_FORWARD #undef _WX_ARG_NORMALIZER_FORWARD_IMPL // ---------------------------------------------------------------------------- // WX_VA_ARG_STRING // ---------------------------------------------------------------------------- // Replacement for va_arg() for use with strings in functions that accept // strings normalized by wxArgNormalizer: struct WXDLLIMPEXP_BASE wxArgNormalizedString { wxArgNormalizedString(const void* ptr) : m_ptr(ptr) {} // returns true if non-NULL string was passed in bool IsValid() const { return m_ptr != NULL; } operator bool() const { return IsValid(); } // extracts the string, returns empty string if NULL was passed in wxString GetString() const; operator wxString() const; private: const void *m_ptr; }; #define WX_VA_ARG_STRING(ap) wxArgNormalizedString(va_arg(ap, const void*)) // ---------------------------------------------------------------------------- // implementation of the WX_DEFINE_VARARG_* macros // ---------------------------------------------------------------------------- // NB: The vararg emulation code is limited to 30 variadic and 4 fixed // arguments at the moment. // If you need more variadic arguments, you need to // 1) increase the value of _WX_VARARG_MAX_ARGS // 2) add _WX_VARARG_JOIN_* and _WX_VARARG_ITER_* up to the new // _WX_VARARG_MAX_ARGS value to the lists below // If you need more fixed arguments, you need to // 1) increase the value of _WX_VARARG_MAX_FIXED_ARGS // 2) add _WX_VARARG_FIXED_EXPAND_* and _WX_VARARG_FIXED_UNUSED_EXPAND_* // macros below #define _WX_VARARG_MAX_ARGS 30 #define _WX_VARARG_MAX_FIXED_ARGS 4 #define _WX_VARARG_JOIN_1(m) m(1) #define _WX_VARARG_JOIN_2(m) _WX_VARARG_JOIN_1(m), m(2) #define _WX_VARARG_JOIN_3(m) _WX_VARARG_JOIN_2(m), m(3) #define _WX_VARARG_JOIN_4(m) _WX_VARARG_JOIN_3(m), m(4) #define _WX_VARARG_JOIN_5(m) _WX_VARARG_JOIN_4(m), m(5) #define _WX_VARARG_JOIN_6(m) _WX_VARARG_JOIN_5(m), m(6) #define _WX_VARARG_JOIN_7(m) _WX_VARARG_JOIN_6(m), m(7) #define _WX_VARARG_JOIN_8(m) _WX_VARARG_JOIN_7(m), m(8) #define _WX_VARARG_JOIN_9(m) _WX_VARARG_JOIN_8(m), m(9) #define _WX_VARARG_JOIN_10(m) _WX_VARARG_JOIN_9(m), m(10) #define _WX_VARARG_JOIN_11(m) _WX_VARARG_JOIN_10(m), m(11) #define _WX_VARARG_JOIN_12(m) _WX_VARARG_JOIN_11(m), m(12) #define _WX_VARARG_JOIN_13(m) _WX_VARARG_JOIN_12(m), m(13) #define _WX_VARARG_JOIN_14(m) _WX_VARARG_JOIN_13(m), m(14) #define _WX_VARARG_JOIN_15(m) _WX_VARARG_JOIN_14(m), m(15) #define _WX_VARARG_JOIN_16(m) _WX_VARARG_JOIN_15(m), m(16) #define _WX_VARARG_JOIN_17(m) _WX_VARARG_JOIN_16(m), m(17) #define _WX_VARARG_JOIN_18(m) _WX_VARARG_JOIN_17(m), m(18) #define _WX_VARARG_JOIN_19(m) _WX_VARARG_JOIN_18(m), m(19) #define _WX_VARARG_JOIN_20(m) _WX_VARARG_JOIN_19(m), m(20) #define _WX_VARARG_JOIN_21(m) _WX_VARARG_JOIN_20(m), m(21) #define _WX_VARARG_JOIN_22(m) _WX_VARARG_JOIN_21(m), m(22) #define _WX_VARARG_JOIN_23(m) _WX_VARARG_JOIN_22(m), m(23) #define _WX_VARARG_JOIN_24(m) _WX_VARARG_JOIN_23(m), m(24) #define _WX_VARARG_JOIN_25(m) _WX_VARARG_JOIN_24(m), m(25) #define _WX_VARARG_JOIN_26(m) _WX_VARARG_JOIN_25(m), m(26) #define _WX_VARARG_JOIN_27(m) _WX_VARARG_JOIN_26(m), m(27) #define _WX_VARARG_JOIN_28(m) _WX_VARARG_JOIN_27(m), m(28) #define _WX_VARARG_JOIN_29(m) _WX_VARARG_JOIN_28(m), m(29) #define _WX_VARARG_JOIN_30(m) _WX_VARARG_JOIN_29(m), m(30) #define _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(1,a,b,c,d,e,f) #define _WX_VARARG_ITER_2(m,a,b,c,d,e,f) _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(2,a,b,c,d,e,f) #define _WX_VARARG_ITER_3(m,a,b,c,d,e,f) _WX_VARARG_ITER_2(m,a,b,c,d,e,f) m(3,a,b,c,d,e,f) #define _WX_VARARG_ITER_4(m,a,b,c,d,e,f) _WX_VARARG_ITER_3(m,a,b,c,d,e,f) m(4,a,b,c,d,e,f) #define _WX_VARARG_ITER_5(m,a,b,c,d,e,f) _WX_VARARG_ITER_4(m,a,b,c,d,e,f) m(5,a,b,c,d,e,f) #define _WX_VARARG_ITER_6(m,a,b,c,d,e,f) _WX_VARARG_ITER_5(m,a,b,c,d,e,f) m(6,a,b,c,d,e,f) #define _WX_VARARG_ITER_7(m,a,b,c,d,e,f) _WX_VARARG_ITER_6(m,a,b,c,d,e,f) m(7,a,b,c,d,e,f) #define _WX_VARARG_ITER_8(m,a,b,c,d,e,f) _WX_VARARG_ITER_7(m,a,b,c,d,e,f) m(8,a,b,c,d,e,f) #define _WX_VARARG_ITER_9(m,a,b,c,d,e,f) _WX_VARARG_ITER_8(m,a,b,c,d,e,f) m(9,a,b,c,d,e,f) #define _WX_VARARG_ITER_10(m,a,b,c,d,e,f) _WX_VARARG_ITER_9(m,a,b,c,d,e,f) m(10,a,b,c,d,e,f) #define _WX_VARARG_ITER_11(m,a,b,c,d,e,f) _WX_VARARG_ITER_10(m,a,b,c,d,e,f) m(11,a,b,c,d,e,f) #define _WX_VARARG_ITER_12(m,a,b,c,d,e,f) _WX_VARARG_ITER_11(m,a,b,c,d,e,f) m(12,a,b,c,d,e,f) #define _WX_VARARG_ITER_13(m,a,b,c,d,e,f) _WX_VARARG_ITER_12(m,a,b,c,d,e,f) m(13,a,b,c,d,e,f) #define _WX_VARARG_ITER_14(m,a,b,c,d,e,f) _WX_VARARG_ITER_13(m,a,b,c,d,e,f) m(14,a,b,c,d,e,f) #define _WX_VARARG_ITER_15(m,a,b,c,d,e,f) _WX_VARARG_ITER_14(m,a,b,c,d,e,f) m(15,a,b,c,d,e,f) #define _WX_VARARG_ITER_16(m,a,b,c,d,e,f) _WX_VARARG_ITER_15(m,a,b,c,d,e,f) m(16,a,b,c,d,e,f) #define _WX_VARARG_ITER_17(m,a,b,c,d,e,f) _WX_VARARG_ITER_16(m,a,b,c,d,e,f) m(17,a,b,c,d,e,f) #define _WX_VARARG_ITER_18(m,a,b,c,d,e,f) _WX_VARARG_ITER_17(m,a,b,c,d,e,f) m(18,a,b,c,d,e,f) #define _WX_VARARG_ITER_19(m,a,b,c,d,e,f) _WX_VARARG_ITER_18(m,a,b,c,d,e,f) m(19,a,b,c,d,e,f) #define _WX_VARARG_ITER_20(m,a,b,c,d,e,f) _WX_VARARG_ITER_19(m,a,b,c,d,e,f) m(20,a,b,c,d,e,f) #define _WX_VARARG_ITER_21(m,a,b,c,d,e,f) _WX_VARARG_ITER_20(m,a,b,c,d,e,f) m(21,a,b,c,d,e,f) #define _WX_VARARG_ITER_22(m,a,b,c,d,e,f) _WX_VARARG_ITER_21(m,a,b,c,d,e,f) m(22,a,b,c,d,e,f) #define _WX_VARARG_ITER_23(m,a,b,c,d,e,f) _WX_VARARG_ITER_22(m,a,b,c,d,e,f) m(23,a,b,c,d,e,f) #define _WX_VARARG_ITER_24(m,a,b,c,d,e,f) _WX_VARARG_ITER_23(m,a,b,c,d,e,f) m(24,a,b,c,d,e,f) #define _WX_VARARG_ITER_25(m,a,b,c,d,e,f) _WX_VARARG_ITER_24(m,a,b,c,d,e,f) m(25,a,b,c,d,e,f) #define _WX_VARARG_ITER_26(m,a,b,c,d,e,f) _WX_VARARG_ITER_25(m,a,b,c,d,e,f) m(26,a,b,c,d,e,f) #define _WX_VARARG_ITER_27(m,a,b,c,d,e,f) _WX_VARARG_ITER_26(m,a,b,c,d,e,f) m(27,a,b,c,d,e,f) #define _WX_VARARG_ITER_28(m,a,b,c,d,e,f) _WX_VARARG_ITER_27(m,a,b,c,d,e,f) m(28,a,b,c,d,e,f) #define _WX_VARARG_ITER_29(m,a,b,c,d,e,f) _WX_VARARG_ITER_28(m,a,b,c,d,e,f) m(29,a,b,c,d,e,f) #define _WX_VARARG_ITER_30(m,a,b,c,d,e,f) _WX_VARARG_ITER_29(m,a,b,c,d,e,f) m(30,a,b,c,d,e,f) #define _WX_VARARG_FIXED_EXPAND_1(t1) \ t1 f1 #define _WX_VARARG_FIXED_EXPAND_2(t1,t2) \ t1 f1, t2 f2 #define _WX_VARARG_FIXED_EXPAND_3(t1,t2,t3) \ t1 f1, t2 f2, t3 f3 #define _WX_VARARG_FIXED_EXPAND_4(t1,t2,t3,t4) \ t1 f1, t2 f2, t3 f3, t4 f4 #define _WX_VARARG_FIXED_UNUSED_EXPAND_1(t1) \ t1 WXUNUSED(f1) #define _WX_VARARG_FIXED_UNUSED_EXPAND_2(t1,t2) \ t1 WXUNUSED(f1), t2 WXUNUSED(f2) #define _WX_VARARG_FIXED_UNUSED_EXPAND_3(t1,t2,t3) \ t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3) #define _WX_VARARG_FIXED_UNUSED_EXPAND_4(t1,t2,t3,t4) \ t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3), t4 WXUNUSED(f4) #define _WX_VARARG_FIXED_TYPEDEFS_1(t1) \ typedef t1 TF1 #define _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2) \ _WX_VARARG_FIXED_TYPEDEFS_1(t1); typedef t2 TF2 #define _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3) \ _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2); typedef t3 TF3 #define _WX_VARARG_FIXED_TYPEDEFS_4(t1,t2,t3,t4) \ _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3); typedef t4 TF4 // This macro expands N-items tuple of fixed arguments types into part of // function's declaration. For example, // "_WX_VARARG_FIXED_EXPAND(3, (int, char*, int))" expands into // "int f1, char* f2, int f3". #define _WX_VARARG_FIXED_EXPAND(N, args) \ _WX_VARARG_FIXED_EXPAND_IMPL(N, args) #define _WX_VARARG_FIXED_EXPAND_IMPL(N, args) \ _WX_VARARG_FIXED_EXPAND_##N args // Ditto for unused arguments #define _WX_VARARG_FIXED_UNUSED_EXPAND(N, args) \ _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) #define _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) \ _WX_VARARG_FIXED_UNUSED_EXPAND_##N args // Declarates typedefs for fixed arguments types; i-th fixed argument types // will have TFi typedef. #define _WX_VARARG_FIXED_TYPEDEFS(N, args) \ _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args) #define _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args) \ _WX_VARARG_FIXED_TYPEDEFS_##N args // This macro calls another macro 'm' passed as second argument 'N' times, // with its only argument set to 1..N, and concatenates the results using // comma as separator. // // An example: // #define foo(i) x##i // // this expands to "x1,x2,x3,x4" // _WX_VARARG_JOIN(4, foo) // // // N must not be greater than _WX_VARARG_MAX_ARGS (=30). #define _WX_VARARG_JOIN(N, m) _WX_VARARG_JOIN_IMPL(N, m) #define _WX_VARARG_JOIN_IMPL(N, m) _WX_VARARG_JOIN_##N(m) // This macro calls another macro 'm' passed as second argument 'N' times, with // its first argument set to 1..N and the remaining arguments set to 'a', 'b', // 'c', 'd', 'e' and 'f'. The results are separated with whitespace in the // expansion. // // An example: // // this macro expands to: // // foo(1,a,b,c,d,e,f) // // foo(2,a,b,c,d,e,f) // // foo(3,a,b,c,d,e,f) // _WX_VARARG_ITER(3, foo, a, b, c, d, e, f) // // N must not be greater than _WX_VARARG_MAX_ARGS (=30). #define _WX_VARARG_ITER(N,m,a,b,c,d,e,f) \ _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) #define _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) \ _WX_VARARG_ITER_##N(m,a,b,c,d,e,f) // Generates code snippet for i-th "variadic" argument in vararg function's // prototype: #define _WX_VARARG_ARG(i) T##i a##i // Like _WX_VARARG_ARG_UNUSED, but outputs argument's type with WXUNUSED: #define _WX_VARARG_ARG_UNUSED(i) T##i WXUNUSED(a##i) // Generates code snippet for i-th type in vararg function's template<...>: #define _WX_VARARG_TEMPL(i) typename T##i // Generates code snippet for passing i-th argument of vararg function // wrapper to its implementation, normalizing it in the process: #define _WX_VARARG_PASS_WCHAR(i) \ wxArgNormalizerWchar(a##i, fmt, i).get() #define _WX_VARARG_PASS_UTF8(i) \ wxArgNormalizerUtf8(a##i, fmt, i).get() // And the same for fixed arguments, _not_ normalizing it: #define _WX_VARARG_PASS_FIXED(i) f##i #define _WX_VARARG_FIND_FMT(i) \ (wxFormatStringArgumentFinder::find(f##i)) #define _WX_VARARG_FORMAT_STRING(numfixed, fixed) \ _WX_VARARG_FIXED_TYPEDEFS(numfixed, fixed); \ const wxFormatString *fmt = \ (_WX_VARARG_JOIN(numfixed, _WX_VARARG_FIND_FMT)) #if wxUSE_UNICODE_UTF8 #define _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed) \ return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \ _WX_VARARG_JOIN(N, _WX_VARARG_PASS_UTF8)) #define _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed) \ return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED)) #endif // wxUSE_UNICODE_UTF8 #define _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) \ return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \ _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR)) #define _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) \ return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED)) #if wxUSE_UNICODE_UTF8 #if wxUSE_UTF8_LOCALE_ONLY #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_UTF8 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_UTF8 #else // possibly non-UTF8 locales #define _WX_VARARG_DO_CALL(return_kw, impl, implUtf8, N, numfixed) \ if ( wxLocaleIsUtf8 ) \ _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed);\ else \ _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) #define _WX_VARARG_DO_CALL0(return_kw, impl, implUtf8, numfixed) \ if ( wxLocaleIsUtf8 ) \ _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed); \ else \ _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) #endif // wxUSE_UTF8_LOCALE_ONLY or not #else // wxUSE_UNICODE_WCHAR or ANSI #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_WCHAR #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_WCHAR #endif // wxUSE_UNICODE_UTF8 / wxUSE_UNICODE_WCHAR // Macro to be used with _WX_VARARG_ITER in the implementation of // WX_DEFINE_VARARG_FUNC (see its documentation for the meaning of arguments) #define _WX_VARARG_DEFINE_FUNC(N, rettype, name, \ impl, implUtf8, numfixed, fixed) \ template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \ rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \ { \ _WX_VARARG_FORMAT_STRING(numfixed, fixed); \ _WX_VARARG_DO_CALL(return, impl, implUtf8, N, numfixed); \ } #define _WX_VARARG_DEFINE_FUNC_N0(rettype, name, \ impl, implUtf8, numfixed, fixed) \ inline rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \ { \ _WX_VARARG_DO_CALL0(return, impl, implUtf8, numfixed); \ } // Macro to be used with _WX_VARARG_ITER in the implementation of // WX_DEFINE_VARARG_FUNC_VOID (see its documentation for the meaning of // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's // requirements). #define _WX_VARARG_DEFINE_FUNC_VOID(N, rettype, name, \ impl, implUtf8, numfixed, fixed) \ template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \ void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \ { \ _WX_VARARG_FORMAT_STRING(numfixed, fixed); \ _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \ impl, implUtf8, N, numfixed); \ } #define _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \ inline void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \ { \ _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \ impl, implUtf8, numfixed); \ } // Macro to be used with _WX_VARARG_ITER in the implementation of // WX_DEFINE_VARARG_FUNC_CTOR (see its documentation for the meaning of // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's // requirements). #define _WX_VARARG_DEFINE_FUNC_CTOR(N, rettype, name, \ impl, implUtf8, numfixed, fixed) \ template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \ name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \ { \ _WX_VARARG_FORMAT_STRING(numfixed, fixed); \ _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \ impl, implUtf8, N, numfixed); \ } #define _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \ inline name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \ { \ _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \ impl, implUtf8, numfixed); \ } // Macro to be used with _WX_VARARG_ITER in the implementation of // WX_DEFINE_VARARG_FUNC_NOP, i.e. empty stub for a disabled vararg function. // The rettype and impl arguments are ignored. #define _WX_VARARG_DEFINE_FUNC_NOP(N, rettype, name, \ impl, implUtf8, numfixed, fixed) \ template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \ void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_ARG_UNUSED)) \ {} #define _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \ inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed)) \ {} // ---------------------------------------------------------------------------- // workaround for OpenWatcom bug #351 // ---------------------------------------------------------------------------- #ifdef __WATCOMC__ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351 // This macro can be used to forward a 'vararg' template to another one with // different fixed arguments types. Parameters are same as for // WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how // to convert fixed arguments. For example, this is typical code for dealing // with different forms of format string: // // WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&), // DoPrintfWchar, DoPrintfUtf8) // #ifdef __WATCOMC__ // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&), // (wxFormatString(f1))) // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*), // (wxFormatString(f1))) // ... #define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\ _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \ _WX_VARARG_WATCOM_WORKAROUND, \ rettype, name, convfixed, dummy, numfixed, fixed) #define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed) \ _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \ _WX_VARARG_WATCOM_WORKAROUND_CTOR, \ dummy, name, convfixed, dummy, numfixed, fixed) #define _WX_VARARG_WATCOM_UNPACK_1(a1) a1 #define _WX_VARARG_WATCOM_UNPACK_2(a1, a2) a1, a2 #define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3) a1, a2, a3 #define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4) a1, a2, a3, a4 #define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \ _WX_VARARG_WATCOM_UNPACK_##N convfixed #define _WX_VARARG_PASS_WATCOM(i) a##i #define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name, \ convfixed, dummy, numfixed, fixed) \ template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \ rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \ { \ return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \ } #define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name, \ convfixed, dummy2, numfixed, fixed) \ template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \ name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \ { \ name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \ _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \ } #endif // __WATCOMC__ #endif // _WX_STRVARARG_H_